Considering there was a mayday (...)
This has to be established first.
- the quote from the DGAC that can easily mean DETRESFA and not Mayday (*)
- the time: loss of ADS-B @ 9:41, Mayday improbable 6 minutes later considering the relief of the region and the previous RoD.
(*) "Le vol s'est déclaré en état de détresse à 10 h 47 locale": suffice to replace by "Le vol
a été déclaré en état de détresse à 10 h 47 locale" and you got from Mayday to DETRESFA.
In english, that's
the fight declared itself in distress vs
the flight was declared in distress [by the ATC services?].